Chinese Science Bulletin

In this paper the infinite numbers of complex structures are shown. We obtain the eigenvalues of p -summing and l_p-type operators in Banach spaces, of compact operators. We characterize the subspaces of with more than one complex structure and 𝑝 s-numbers in information-based complexity. We give a characterization of operators from l_q.

The transfer of energy as heat is always from the higher-temperature medium to the lower-temperature one, and heat transfer stops when the two mediums reach the same Heat is the form of energy that can be transferred from one system to another as a result of temperature difference. A thermodynamic analysis is concerned with the amount of heat transfer as a system undergoes a process from one equilibrium state to another. The science that deals with the determination of the rates of such temperature. Heat can be transferred in three different modes: conduction, convection, and radiation. All mo

In cases of cardiac arrest, efficient cardiopulmonary resuscitation (CPR) is essential to improve prognoses. The purpose of this study is to evaluate the level of CPR competency among paramedics in Saudi Arabia, with an emphasis on compression depth and ventilation procedures. In this investigation, 69 paramedics participated, and CPR scenarios were simulated on an Ambu manikin. With an emphasis on the accuracy and effectiveness of breathing procedures as well as the constancy of compression depth, this configuration made it possible to thoroughly evaluate each participant's approach. Accordin

The paper proposes a robust crypto-steganography approach that secures the data without affecting it and efficient anti-forgery tool. The proposed approach consists of main three security levels with n-round sub-levels. The hybridization of crypto-chaos based tools with various data hiding tools is performed perfectly. The paper carried out several simulation experiments using multi dataset (Math work, Yolov8 and others) to evaluate the proposed scenarios and find integration of these techniques that provides the best security performance without affecting the data. The best simulation experim

The efficacy of Anadara granosa shell powder (AGSP) as an alternating catalyst medium in the carburizing process of low-carbon steel has been investigated. This research utilized St. 42 steel, employing carburizing agents of coconut and Anadara granosa shell powder. The carburizing process was conducted at 950°C, with Anadara granosa shell powder percentages of 0%, 10%, and 20% and carburizing durations of 3 hours, 6 hours, and 9 hours, respectively. Following the carburizing process, the specimens were rapidly cooled using the water-quenching medium. The specimens' surface hardness was teste